A tire noise reduction device includes a sound absorbing member made of a porous material; and a band member disposed between the sound absorbing member and the tire inner surface and provided for attaching the sound absorbing member to a tire inner surface, the band member including chamfered portions on both surface sides at both ends in a width direction of the band member.

A pneumatic tire of the present technology is a pneumatic tire provided with a tread portion, side wall portions and bead portions, a plurality of circumferential grooves extending in the tire circumferential direction being provided in the tread portion, and a belt-shaped sound-absorbing member being bonded via an adhesive layer to the tire inner surface in a region corresponding to the tread portion along the tire circumferential direction, wherein the width W of the sound-absorbing member is from 70% to 95% of the tire ground contact width TCW, and the total width of the circumferential grooves included in the region in the tire width direction in which the sound-absorbing member is disposed is from 25% to 40% of the width W of the sound-absorbing member.

A pneumatic tire of the present technology is a pneumatic tire provided with a tread portion, side wall portions and bead portions, a plurality of circumferential grooves extending in the tire circumferential direction being provided in the tread portion, and a belt-shaped sound-absorbing member being bonded via an adhesive layer to the tire inner surface in a region corresponding to the tread portion along the tire circumferential direction, wherein the width W of the sound-absorbing member is from 70% to 95% of the tire ground contact width TCW, and the total width of the circumferential grooves included in the region in the tire width direction in which the sound-absorbing member is disposed is from 25% to 40% of the width W of the sound-absorbing member.

A tire includes: a tire frame member formed in a ring shape from a frame resin material, and including a pair of bead sections, a pair of side sections, and a crown section; a ring shaped bead core that is embedded in and joined to each of the bead sections, and that is formed by a single strand, or plurality of strands, of bead cord extending in the tire circumferential direction, and covered with, and joined to, a covering resin material; and an extension portion that extends from each of the bead cores in a direction that intersects with the tire circumferential direction when viewed from a tire side face, and that is joined to the tire frame member.

There is provided a tire comprising a tire frame that is formed of a resin material and has a circular form, wherein the resin material comprises a thermoplastic elastomer having a structure including a hard segment (HS) and a soft segment (SS), which repeat alternately, in which a number of repeating units in one molecular chain is from 2 to 10, each of the repeating units being a pair of the hard segment (HS) and the soft segment (SS), the thermoplastic elastomer having a number average molecular weight of from 45,000 to 160,000.

A balancer for a wheel and tire assembly includes one or more tubes 101 containing a movable mass 104. The tube or tubes is/are mounted to a resiliently deformable support 102 with an outer dimension that substantially matches an inner dimension of the tire. the support being arranged to position and support the or each tube within the tire. The/or each tube may be annular. The support may be formed from a plastics mesh 102.

In a pneumatic tire, first and second sound absorbing members are adhered to an inner surface of a tread, have a total volume ranging from 10% to 40% of a capacity of a tire cavity, and are separated from each other by 60% of the width of a center land. The first sound absorbing member is on one side in a lateral direction with respect to a position of 40% of a width of the center land from one end of the center land on one side in the lateral direction to the other side in the lateral direction. The second sound absorbing member is on the other side in the lateral direction with respect to a position of 40% of the width of the center land from the other end of the center land in the lateral direction to the one side in the lateral direction.

In a pneumatic tire, first and second sound absorbing members are adhered to an inner surface of a tread, have a total volume ranging from 10% to 40% of a capacity of a tire cavity, and are separated from each other by 60% of the width of a center land. The first sound absorbing member is on one side in a lateral direction with respect to a position of 40% of a width of the center land from one end of the center land on one side in the lateral direction to the other side in the lateral direction. The second sound absorbing member is on the other side in the lateral direction with respect to a position of 40% of the width of the center land from the other end of the center land in the lateral direction to the one side in the lateral direction.

A wheel for vehicles includes: a rim and a tire mounted on the rim and inflated to an operating pressure; axial end portions of a tread band of the tire radially spaced apart the same distance from a rotation axis of the wheel and a median circumferential line of the tread band axially shifted by a predetermined distance relative to a mid-line plane of the wheel; the wheel mounted on a car with a camber angle substantially zero and with the median circumferential line shifted toward the outside of the car relative to the mid-line plane.

A wheel for vehicles includes: a rim and a tire mounted on the rim and inflated to an operating pressure; axial end portions of a tread band of the tire radially spaced apart the same distance from a rotation axis of the wheel and a median circumferential line of the tread band axially shifted by a predetermined distance relative to a mid-line plane of the wheel; the wheel mounted on a car with a camber angle substantially zero and with the median circumferential line shifted toward the outside of the car relative to the mid-line plane.